How MRI Works - Part 1 - NMR Basics

How MRI Works: Part 1 - NMR Basics.
First in a series on how MRI works. This video deals with NMR basis such as spin, precession, T1 and T2, TR and TE, and Boltzmann Magnetization.
Part 2 - The Spin Echo - • How MRI Works - Part 2...
Part 3 - Fourier Theory and k-Space: • How MRI Works - Part 3...
Part 4 - The Gradient Echo Sequence : • How MRI Works - Part 4...
Slides can be purchased here:
/ powerpoint-slides-how-...
0:00 - Introduction
1:22 - Nuclear Magnetic Resonance
4:10 - Inside the MRI Scanner
7:50 - The Proton, Spin, and Precession
11:34 - Signal Detection and the Larmor Equation
14:10 - Flip Angle
15:30 - Ensemble Magnetic Moment
16:34 - Free Induction Decay and T2
18:43 - T2 Weighting and TE
21:46 - Spin Density Imaging
24:18 - T1 Relaxation
25:45 - T1 Weighting and TR
27:01 - The NMR Experiment and Rotating Frame
28:57 - Excitation: the B1 field
30:14 - Measuring Longitudinal Magnetization
31:34 - The MR Contrast Equation
34:42 - Boltzmann Magnetization and Polarization
40:09 - Hyperpolarization
41:42 - Outro

[@thepirl903]

Part 2 on the Spin Echo is now up and can be viewed here: kzbin.info/www/bejne/g2jcmWOKpJuKmNU . Enjoy!

[@walykarim2294]

You're just awesome

[@victorgabr]

Subscribed and enabled all notifications! Thank you so much!

[@ondrejburkot4660]

Please, could you share list of web pages and documents (bibliography), which you used in making this video? I'm writing Bachelor's degree work and I wrote some of information you mentioned in video, but I have to cite them :( It would be very useful for me

[@andreymityanov3252]

The return of net magnetization in the longitudinal plane does not give off a signal. This means that T1 cannot be measured directly. Please, tell, how T1 is actually measured

[@amrinislam7948]

Sir plz make part 4 ,other remaining topics u r awesome ,u make the mri concept easier plz sir ,I need to know for my exam

[@DKonigsbach]

Several have commented here that this is the best explanation of MRI they've encountered. I'll go further. This is perhaps the best physics lecture I've heard. And given how many excellent physics videos are here on KZbin, that's saying a lot.

[@msgreymatter4061]

Beginning, me thinking "Ooooh, 43 minutes, isn't that a bit long?". 3 hours later: still at minute 12, as I keep rewatching with normal and 1.5x speed to make sure, I get it all. GREAT explanation. My textbook has led me down, but you're getting me right back on track again :)))

[@nnonyedoris9751]

😃😃😃

[@musikpal]

Yep some text books are terrible. I threw my general Chem text book in a recycling bin so no one will ever read it because there was only a tiny tiny part of a section of a chapter that covered Quantum mechanic.

[@shawnmclean7707]

Bro I’m stuck at 4mins

[@mihaigherman3713]

Same

[@ScottWalshWoodworking]

This is outrageously good content. The visuals are so well done and so important for a good understanding.

[@ololh4xx]

i am no medical professional, nor am i a physician ... and yet, i managed to follow the basic explanations and now know the abstract concept about how MRIs work. That is cool.

[@user-ki6uh6wc8j]

The lecture literally saves my life! The explanation is so straightforward and easy to follow. Will recommend it to my mates. Cheers!

[@headpox5817]

35:56 "Stay with me. Don't get lost just yet." I love it..! I was already mostly lost, but had to keep watching... Such incredible content. Beautifully delivered.

[@halonothing1]

Before even watching this video I'm going to say the fact that it's over 40 minutes long is VERY promising. It tells me the author(s) didn't cut any corners or dumb anything down for the sake of appealing to typical KZbinrs. That shows some real integrity, and I respect the heck out of such integrity. I can't stand it when a video claims to explain an incredibly complex subject that requires a layperson have some background knowledge in a lot of fields in 5 minutes.

[@user-dt1be8pb1m]

Hello from Spain. That this is the best explanation of MRI they've encountered.

[@joaosaraiva6315]

I need the second part, I have an exam this week 😭😭😭😭😭 you can't abandon us like this

[@36_azzamadnan28]

same bro same :'(

[@ankitnmnaik229]

Which course are u pursuing

[@ankitnmnaik229]

:) :))((())))))))))

[@michealjones807]

SO GOOD! So many areas of foggy confusion cleared up for me. Everybody always wants a hand-waving non-descriptive explanation which just kills my need to understand every little detail. I cant thank you enough for this video.

[@Liz-ye1qi]

Even though the lecture is long, you didn’t just upload a lengthy lecture of monotone “I know I’ve repeated this multiple times but hear me out” kind of voice, but you actually take your time to explain and make the environment fun and active. Thank you!

[@FraizyMD]

Hands down the greatest MRI physics lecture I've seen so far... Keep up the good work! I'm avidly waiting for part II! - Rads Resident

[@spectra6995]

Great Video, Thank you! I’m waiting for part II.

[@nijatibrahimov7451]

This is one of the most extensive explanations of MRI on youtube. Many thanks for the effort you've put to make this video. It's sad that there is no part 2.

[@brigritte2091]

part 2 and 3 is out now! the link is in the description. 🤓!

[@roflawlmao123]

Thank you so much for this lecture. Probably the highest quality, clearest I've heard without oversimplifications.

[@natalieadolphi7317]

I'm an MR physicist, and I'm very picky about getting the physics correct, and this video is very good! Kudos!

[@LBoogie49]

As an MRI Tech, I truly appreciated the ease and level of understanding that this video was placed. It’s not the easiest to explain in layman’s terms of course, but this was awesome. I’m always looking for a different way to review and improve on my skill set and I enjoyed this!

[@joetheindividual4855]

I’m only 8 minutes in and it has answered a bunch of questions that I always ask myself when I’m in there. Doing my entire spine was a long time to think about stuff. Thank you.

[@satishuniyal2526]

It's a wonderful presentation. A melodious and clear voice. No complexity, no confusion and simple enough. Thanks a lot

[@Ravprot]

This is the best animation and teaching video I've found. Thanks for this!

[@stephenparallox]

Great video, you really touch on the physicals portions of MRI better than any other video I have come across.

[@sankalpprabhu6637]

This explanation is so clear and concise - excellent material for a resident radiologist. Please upload the second part, we're all waiting to learn more! :)

[@rh1z0me]

Amazing and incredibly simple (but at the same time very deep) explanation of the MRI/NMR technology. I'm very glad to find this video, while preparing to neuroimaging technology exam. It's a bit long but certainly worth to watch. Waintin' for more - thank you!

[@felixgross4961]

Tremendous video! The very best on this matter so far imo. Thank you. Put your hands up for Part 2! Looking forward.

[@AlberGrau]

one of the best explanations about MRI on youtube, thanks for sharing

[@giuseppefusco1189]

This is a great video! Really hope to see part II anytime soon.

[@MickyTN24]

Please meka a part 2!!! is was by far the best explanation I found on KZbin!

[@mkimball6]

I'm getting a PhD in a chem lab that uses a lot of solid state NMR, so I was familiar with T1 and T2, but not how the weighting works or how pulse angles mesh with QM. I learned a lot! I can't wait to watch part 2 in a bit. I wonder if our pulse programs are different

[@jessereynolds9013]

Best MRI video I have seen. The animations are super helpful! Thanks

[@landrynzudie5752]

Excellent video. Very well presented with clear visuals. Looking forward to part II. Thanks

[@thinkingahead6750]

Brilliant. Thank you so much for putting in the time and effort to make this available. Are you doing a Part2 ?

[@msmarji]

Best explanation and graphics for MR on YT. Looking forward to part 2. Thank you so much for all your time and effort in creating this video.

[@g.aloysie8439]

ohh my God, thank you very much, i spent two weeks trying to understand this chapter but one video made it all clear

[@2513hey]

Finally a very good video on this matter, thank you so much, we're still waiting for the second part.

[@tanmayahmed4622]

Thanks. This is the most illustrative and intuitive one video in youtube to understand MRI.

[@geosamways]

Brilliant explanation. The best I have seen! I have been struggling to visualise this for years. The animations are great and your delivery style is perfect . . . .Many thanks

[@isaackay5887]

Please do a Part 2! I was really looking forward to bring-watching this lol -- subscribed though!

[@Archturian8880]

I haver never enjoyed MRI physic classes like this before it feels like I am watching documentary. Kudos to this channel !

[@sina8883]

Wow! So good! I am no physicist or mathematician, but even hearing it once and being exposed to it was very helpful conceptually. Thank you, and I can’t wait for part two!

[@PhoenixSparrow]

This is a brilliant video, some of the clearest explanations I've heard! I hope one day you can make part 2.

[@laautaro11]

this is amazing, really hope you can make it back with a part 2! would be lovely from you to add in the description or in some comment recommended literature from where you study, thanks!

[@gabrielgandarilla6936]

Sir, this is an excellent breakdown of how NMR/MRI works. 10/10 will watch again, thx

[@ryandoyle3413]

My dad worked for 15 years or so on MRIs before transferring to another company, this is such a cool explanation of how they actually work! I'm more used to the context of NMR, since I'm an analytical chemist

[@thomasspoerer2930]

Amazing you share such high quality teaching with the world for free like this! Immensely appreciated! And if you can't already tell how much we all love your video, I'm also going to ask for Part II...

[@jonathanfuss3611]

I really like, how you try (and succeed) to be scientifically correct but still being able to explain everything simple enough for everyone to understand. Waiting for a second part!

[@user-fu7lj9tv4y]

the best MRI video I have watched so far. thank you for your generous sharing!

[@oksound3861]

The most glaring property of your video and succinct explanations is the ' lack of ' presumptions of the viewers likely ignorance which for me is most effective not to mention pure and personallt deeply appreciated. Thank you!

[@The_Faubla]

This is brilliant content. Thank you for taking the time to produce, explain and visualize. Very much appreciated

[@ChargedCMOS]

I don't really know who you are, but what I know is that I'm forever grateful to you for making this video! thank you so much!

[@Sugoiboi64d4]

What a time to be alive.. thank you for such a visually pleasing and concise explanation

[@hazelchou6919]

Brilliant Job!!!!!! Thank you so much for making it!!!!! Waiting for part 3 and more!!

[@rhcorr]

Thanks for this video, amazing content. I never expected to understand such complex physics! Hope you find the time to work on part 2.

[@sunshiney15]

One of the best explanation of the physics behind MRI I've listened to...Great job!

[@user-bq6bg9jq6g]

This is pure gold!!Fantastic explanation!!

[@mandardeodhar400]

Both the animation and explanation are fantastic. Thank you very much!

[@Musicrulzbff]

this is the best MRI video out on youtube, thank you!

[@payalpatel4316]

The Best, video to explain NMR. Thanks a lot for the hard work put in to explain and animate things. Waiting for the next video. Again, thanks a lot :)

[@Mandjieva]

This is absolutely amazing video 😍 Thank you so much for all your time and efforts. Animations are amazing. You are the great lecturer!

[@sauravkshastri2558]

Excellent tutorial :D. I am looking forward to Part 2!

[@ThePrime125]

This video is incredibly good, i am trying to understand to MRI to shortly explain it in a radiomic master thesis, and this is by far the best I have seen, also promps for actually talking about the boltsman equation, it reminds me of semiconductor stuff !

[@Nrxciv]

Super sober and clean explanation. Very helpful!

[@timozomerman]

Best explanation of MRI I have encountered. Thank you so much!

[@priyaseth9877]

wow, 10 minutes into the video and Im blown by the amazing explanation. I never understood physics in childhood and this was wonderful. Thanks a lot for helping us out

[@abdouabdel-rehim8537]

I have seen few MRI videos but this was the best. Thank you. hoping for more lectures.

[@soleparadise4822]

I am so happy I found this video!!! I’ve been slacking off cuz it’s been difficult to understand but you really explain so crystal clear thank you so much 😊

[@apbosh1]

Most interesting! I'm not in the industry at all but i managed to follow the concept because you explain it so clearly.

[@ulfleisner585]

I'd be really happy to see part two! You rock!

[@Zinthrow]

Excellent video. You have a great talent for creating visualizations. Thank you!

[@PhysioDetective]

My brain is broken after listening to this - I love it! Thank you!!

[@alejandroplanas4735]

Few minutes into this video and I have already understood some concepts that I have been mistaken about for years. Thank you so much for the effort.

[@alexanderdiederichs7332]

this video is truely fantastic! The Visuals are great and I like also that you make remarks to the more complicated physics

[@faytroullinou6557]

Such a helpful video. Thank you! Can’t wait for more!

[@mferraro89]

This is such a phenomenal explanation, absolutely incredible work

[@MOJTABASHOMAL]

Best description i ever seen about MRI, thank you

[@BogdanNMarincu]

This was an excellent explanation! Thank you so much for creating it

[@emmap8280]

thank you so much! You've provided me a great starting point and base knowledge to use in my undergrad physics diss! you explained concepts so well!

[@HanGyooKang]

Amazing lecture~! One of the perfect lectures about NMR. I'm waiting for Part II.

[@heisenberg_fisher2890]

This is exceptionally high quality content. Thank you very much for your time and effort. We really appreciate it.

[@fajardofje]

excellent animations, the right ammount of math and very pedagogic. Bravo!

[@plusleo1083]

Wonderful work, now I am waiting for the PART II like many others

[@philippoMC]

please make a second part, this explanation was amazing!

[@luissnooze548]

Really helpful!! I hope you still planning on doing part II 🙏🏼

[@aocchan]

I have no previous knowledge of physics whatsoever but, for various reasons, I have to study the physics behind imaging methods. Thank you very much, even with my complete ignorance I was able to follow most of your video. Your exposition was really brilliant. I hope you are a teacher!

[@five5716]

I dont write that much comments, but this video deserves it. I am studying medical technologys in germany and this video explained a whole subject to me. Its incredible good. Thank you!!!!!!!!!

[@haticesahin8830]

Thank you very much! Much better than trying to imagine from the text book. Instant clarity!

[@philliphelmbright4833]

Top notch work!!!! Looking forward to all your future videos!! Thank you!!

[@zhenbinlyu5852]

Thank You very much! Very helpful! Waiting for part 2!

[@visible-lp2sf]

A big thank you to the content creator, really very nice illustration. I stopped the lecture in between and expressed my gratitude towards you.

[@gahanganesh]

Fantastic video! Part 2 would be of great help.

[@virgi6480]

Watching your series of lectures helped me understand NMR and pass my last university exam. Thank you for your work! It was really clear and helpful.

[@sibeov6609]

Fantastic video. Hope part 2 is not far away.

[@sdsa007]

Amazing! Love the suspense at the end!

[@amirm7373]

fantastic! but we are waiting for the second part :)

[@pablodelgadosanchez7340]

Hi amazing video, please get the second part, this video was amazingly helpfull, it would be great if you uploaded a second part. Thank you very much!

[@AseveraTv]

Thank you for the video :) I do hope we get a part 2 soon!

[@mathformikey2222]

Thank you so much for this video, really appreciated it :D A release of part II would be phenomenal!

[@hazarbenanunal6482]

One of the best videos on MRI.

[@michaelogden5958]

There were some sharp cookies who came up with this (MRI). Fascinating. Thanks for sharing!

[@michaelbergstrom8919]

This is brilliant. I am so looking forward to part 2